for #31532 # Details This PR adds templates for displaying the "Scheduled batch script" and "Canceled batch script" global activity feed items. It also updates the "Cancel batch script?" modal to show a spinner on the cancel button when applicable. # Checklist for submitter ## Testing - [X] QA'd all new/changed functionality manually <img width="820" height="210" alt="image" src="https://github.com/user-attachments/assets/45c8b15c-b100-4356-aa65-24441ecc16a0" />